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I'll be flying in to Athens alone in Sept. I would love to spend more time sight seeing especially in Santorini, Mykonos, Crete and I am still reading up places to go.. eg. the red beach, staying in a cave house with beautiful sunset over Oia, etc.

What is the best option for travelling between the islands, eg fr Mykonos to Naxos to Santorini to Hydra? I am planning to take a ferry (6hrs) from Athens to Mykonos as many reviews that the view is worth the ride.

hi,the only option between the islands is the ferry (apart from some very few exceptions of major islands connected by flights at peak season)..there is no dirct ferry from santorini or any of the other islands you mention to hydra,as they belong to different island chains..more info about how the ferry system works in greece here

so you have to get back to athens and catch a quick ferry frpm pireaus (athens main port) to hydra.

but from athens to the first island (mykonos) and from the last island (mykonos,naxos and santorini all have airports) to athens i suggest a quick flight..much quicker than the ferry and you will use the ferrys between the islands anyway,so a flight is a good option..if you bok early enough it can be cheaper than the ferry..tickets here,check their low fare calendar and sign up for their newsletter for special offers